| タイトル | GPS Antenna Characterization Experiment (ACE): Receiver Design and Initial Results |
| 本文（外部サイト） | http://hdl.handle.net/2060/20150018315 |
| 著者（英） | Moreau, Michael C.; Parker, Joel J. K.; Valdez, Jennifer E.; Martzen, Phillip; Highsmith, Dolan E. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2015-06-22 |
| 言語 | eng |
| 内容記述 | The GPS Antenna Characterization Experiment (ACE) is a research collaboration between Aerospace and NASA Goddard to characterize the gain patterns of the GPS L1 transmit antennas. High altitude GPS observations are collected at a ground station through a transponder-based or "bent-pipe" architecture where the GPS L1 RF spectrum is received at a platform in geosynchronous orbit and relayed to the ground for processing. The focus of this paper is the unique receiver algorithm design and implementation. The high-sensitivity GPS C/A-code receiver uses high fidelity code and carrier estimates and externally supplied GPS message bit data in a batch algorithm with settings for a 0 dB-Hz threshold. The resulting carrier-to-noise measurements are used in a GPS L1 transmit antenna pattern reconstruction. This paper shows initial transmit gain patterns averaged over each block of GPS satellites, including comparisons to available pre-flight gain measurements from the GPS vehicle contractors. These results provide never-before-seen assessments of the full, in-flight transmit gain patterns. |
| NASA分類 | Communications and Radar; Space Communications, Spacecraft Communications, Command and Tracking |
| レポートNO | GSFC-E-DAA-TN24090 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/554833 |
